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Contract OI history

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Oct 23, 2026 EXPIRATION

TSM $390.00 Put

TSM261023P00390000

Latest saved OI1,018Oct 23, 2026
Last change-2vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TSM $390.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,0205100 2026-10-02: 228 OI2026-10-05: 208 OI2026-10-06: 202 OI2026-10-07: 201 OI2026-10-08: 201 OI2026-10-09: 199 OI2026-10-14: 268 OI2026-10-15: 300 OI2026-10-16: 896 OI2026-10-21: 1,020 OI2026-10-23: 1,018 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

TSM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,018-2
Oct 21, 20261,020+124
Oct 16, 2026896+596
Oct 15, 2026300+32
Oct 14, 2026268+69
Oct 09, 2026199-2
Oct 08, 20262010
Oct 07, 2026201-1
Oct 06, 2026202-6
Oct 05, 2026208-20
Oct 02, 2026228No prior observation